Oil pump and method of assembling the oil pump

Details Oil pump and method of assembling the oil pump Oil pump and method of assembling the oil pump

2011-06-14

2011-06-14

Denion, Thomas E (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

C029S888020, C029S464000, C418S001000

Reexamination Certificate

active

07959422

ABSTRACT:
An oil pump including a first housing having a rotation shaft insertion hole, a cam ring, a pump element, a rotation shaft rotatably extending through the rotation shaft insertion hole, a second housing disposed on the cam ring, wherein the cam ring is placed in a position relative to the rotation shaft insertion hole of the first housing by using a jig, and the cam ring includes a clamped portion that is clamped by a cam ring holding device, while the first housing and the second housing are fixed to each other after placing the cam ring in the position relative to the rotation shaft insertion hole by using the jig. Alternatively, the oil pump including a fixing means for fixing the cam ring to the pump body instead of the clamped portion.

REFERENCES:
patent: 2966118 (1960-12-01), McAlvay
patent: 3532447 (1970-10-01), Charlson
patent: 3614274 (1971-10-01), Ohrberg
patent: 5328343 (1994-07-01), Bernstrom et al.
patent: 6568930 (2003-05-01), Schmidl et al.
patent: 2006/0073060 (2006-04-01), Kurata et al.
patent: 2006/0210417 (2006-09-01), Kurata et al.
patent: 2002-155872 (2002-05-01), None
Chinese Office Action dated Jul. 3, 2009 w/English translation (seven (7) pages). includes an English translation of the summary only.

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